Mixer



A ril 29, 1924. 1,492,061

R. AVERILL v MIXER Filed July 51. 1922 ROGER AVL'R/LL INVENTOR.

ATTORNEY BY Kim M.

Patented Apr. 29, 1924.

HUNITEDJSTATES ROGER AVERILL, L08 ARGELEB, CALIFORNIA.

Application filed July 81, 1898. Serial No. $78,845.

To all whom it may com-em:

Be it known that I, Room: Avnnmn, a citizen of the United States,vresidin at Los An les, county of Los Angeles, tate of Cali ornia, haveinvented new and use ful Improvements in Mixers, of which the followingis a specification.

This invention relates to trucks employed in concrete -work, and has forits object the rovision of a vtruck having a body for t e transportationof the dry ingredients of the concrete, from a central supply, wherethey are loaded in the proper proportion, to the particular work, thetruck also including a distinct mixing and conveying apparatus intowhich the, load of dry material is fed when the work has been reached,and a suitable water supply also discharging into the mixing apparatus,for hydration of the dry gravel, sand, cement, and the like, during themovement of the same through the mixing and conveying apparatus, inorder that properly mixed wet concrete may be finally discharged fromthe jtruck.

The invention will be readily understood from the following descriptionof the acoompanying drawings, in which: Fig. 1 is a side elevation of. atruck constructed in accordance with the invention, and shown partly inmedial vertical section.

Fig. 2 is a transverse section on the line 2-2 of Fig. 1.

Fig. 3 is a detail plan view of the transmission of the truck.

The improved truck construction includes a usual chassis 1, wheels 2,transmission housed within casin 3, and drive shaft 4,

" the power of propu sion of the truck being supplied by the usual motor5.

he dy for the truck is supported upon stringers 6 carried by the si eframes 0 the chassis, and the body may be of usual desi 11 extendingfrom the cab 7 to the rear of t e truck, and adapted to car of loose,dry material, such as san gravel, and cement.

The truck body is illustrated as comprising the base 10, and side andend walls 11,

with a suitable discharge opening 12 in the front medial portion of thebase.

mixing and conveying mechanism is mounted beneath the truck body, andextends the length thereof, with its front end a load in alinement with,and communicating with the interior of the truck body through theopening 12.

The mixing mechanism includes a shell 13 supported from the underside ofbase 10, and forming an elongated conduit termispout 14 beyond thenating in a dischargp rear end of the true A shaft 15 is journaled inthis conduit, and carries a spiral blade 16, so that when said shaft isrotated,

the material fed throu h opening 12 from' the truck -body to the s ell13, will be thoroughly mix'edand moved along by the spiral f ,vided withvalvular connecting means 21,

whereby a hose or the like may be readily connected to said pipe.

The driving connection for rotating the spiral conveyor is p-referablactuated by the motor of the truck, said driving connection beinginoperative when material is being transported in the truck, and adaptedto 'be engaged, through operation of suitable control mechanism, whenthe work is reached and after transmission 3 is placed in neutral, orinoperative position with relation to drive shaft 4:, in order toactuate the mixing and conveying mechanism, for hydration and dischargeof the material in the truck.

The driving connection is shown as comprising an auxiliary transmissionhaving f the shaft 22', said auxiliary transmission being mounted in ahousing 23 supported by the main transmission housing 3. The auxiliarytransmission is driven in any usual manner from the power shaftextending from motor 5 into housing 3, and is provided with a manualcontrol lever 25 for 'operatively engaging or disengaging the and asprocket chain 28 is received on said sprockets, so that when shaft 22is rotated by the motor 5, the spiral conveyor will be driven thereby.

It will be noted that by the use of a truck as thus described,rehandling of the concrete material, as is the present practice, iseliminated. The dry ingredients for the concrete, are mixed and loadedin the truck body in the proper proportion, at the central plant, andthe truck then hauls the material to the work. The spiral conveyor andmixer is then set in motion, and the material is shoveled throughopening 12 into the same, with the required amount of water beingsupplied through pipes 17 for hydration of-the dry material. The Waterand ;;m-aterial for the concrete are thoroughly mixed in the conveyormechanism, and the wet concrete is finally discharged through spout 14,ready for use.

While I have illustrated and described the preferred practicalembodiment of the device, it will be apparent that various changes maybe made in the construction, combination, and arrangement of parts,without departing from the spirit of the invention.

Vhat is claimed is:

1. A motor driven truck, a body mounted on said truck and having a fiatbottom spaced slightly above the truck drive mechanism, said bottomhavingad ischarge opening therein at the front end of said body andcomprising a relatively small portion of the area of said bottom wherebya load of loose material may be carried on said bottom without movementof the main portion of the load through said opening, a casing mountedbeneath the bottom of said body above said drive mechanism and extendingthe length of said body and commu'nicatin at its forward end with theopening in sai bottom and forming a discharge at its rear end, arotatable spiral conveyor and mixer in said casing, a power shaft drivenby the truck motor, a power transmission between said shaft and saiddrive mechanisimand an auxiliary power transmission between said powershaft and said spiral conveyor having means for disengaging the same.

2. A motor driven truck, a body mounted on said truck and having a fiatbottom spaced slightly above the truck drive mechanism,said bottomhavingadischarge opening therein at one end of said body and comprisinga relatively small portion of the area of said bottom whereby aload ofloose material may be carried on said bottom without movement of themain portion of the load through said opening, a casing mounted beneaththe bottom of said body above said drive mechanism and extending thelength of said body and communicating at one end with the opening insaid bottom and forming a discharge at its opposite end, and a rotatablespiral conveyor and mixer in said casing.

3. A motor driven truck, a body mounted on said truck and having itsbottom spaced above the truck drive mechanism, said bottom having adischarge opening therein, a casing mounted beneath the bottom of saidbody above said drive mechanism and communicating at one end with theopening in said bottom and forming a discharge at its opposite end, andconveying and mixing means in said casing.

In testimony whereof I have signed my name to this specification.

ROGER AVERILL.

